Blast-furnace.



2 SHEETS-SHEET 1.

Patented Mal'. 14, 1911.

F. J. ZIPPLER.

BLAST PURNACE.

APPLICATION FILED MAR. 7, 1910.

F. J. ZIPPLER.

BLAST FURNAGE.

APPLICATION FILED MAB. '1, 1910.

Patented Mar. 14, 1911.

2 SHEETS-SHEET 2.

FRANCIS J'. ZIPPLER, 0FAVALON,`IP`ENNSYLVANIA.

BLAST-FURNAGE.

i Specification of Letters Patent.

Applicatn led March 7, 1910. Serial No. 547,661.

To all whom it may concern:

Be it known that I, FRANCIS J. ZIPPLER, a resident of Avalon, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Blast-Furnaces; and I do hereby declare thefollowing to be a full, clear, and exact description thereof. A

My invention relates to blast furnaces, and has special reference to thebosh of such furnaces.

The object of my invention is to provide a cheap, simple and efficientform of a bosh for a blast furnace in which the burning out of the sameis reduced to. a minimum, will v provide for an increased output by suchfurnace, and will enable a reduction'of the fuel consumption therein.

To these ends my lnvention consists, generally stated, in the novelarrangement, construction and combination of parts, as hereinafter moreparticularly set forth and described and particularly pointed out in theclaims.

To enable others skilled in the art to which myinvention appertains toconstruct and use my improved blast furnace, I will describe the samemore lfully, referring to the accompanying drawing, in which- Figure 1is a vertical section of the lower part of va blast furnace embodying myinvention. Fig. 2 is a cross-section of the same on the line 2 2, Fig.1, looking in the direction ofthe arrow. Fig. 3 is an inverted plan viewof one of the segments employed informing the inwardly extendingwater-jacket. Fig. 4 is an outer face view of the same. Fig. 5 is a topplan view of one of the segments employed in forming the twyer boxes.Fig. 6 is an outer face view of the same.

Like symbols of reference herein indicateV likeparts inneach of thegures of the drawlngs.

As illustrated in the drawings, 1 represents the upper portion and 2 thebosh of the blast-furnace A, which bosh is provided with the lining orwall 3 havin the inwardly tapered portion3 extending from the straightvertical portion 4 of the wall 4 in said upper portion, and such liningsareformed of theusual tire-brick construction. The `lower'end of theinwardly tapered wall portion 3 of the bosh-wall 3 is flared or taperedoutwardly on its inner face, as at' 5,"in

' order tolform the projecting portion 5 in said Wall, while thelower-portion of said ared portion connects with a straight verticalportion 3 in saidwall and such flared portion and vertical portion areformed of the usual lire-brick construction.

Fittingunder the vertical portion 3. of the bosh-wall 3 is the hollowwater jacket 6,

lwhich is formed of segmental sections 6, and

preferably of castv metal, such as steel, while such jacket has theinner faces 7 on its sections lared outwardly from the inner face ofsaid vertical portion, to form a projecting portion 5 in said wall bysaid portion 3 and such jacket is provided with the hollow flangeportion 8 extending outwardly from their outer faces 7 at the upper endsof such sections and beyond the outer face of such vertical portion.

Fitting under the jacket 6 is the main twyer jacket portion 9, whichrests on the lower vert-ical portion 3@ of the bosh-wall 3, and isformed of the segmental sections 9 preferably .of cast metal, such assteel. The sections of the twyer portion 9 have the upper and lower4sides 0f the same formed hollow, as at 10 and 11, andbetween such sidesand at the ends of such sections are the vertical L-shaped hollow walls12. These walls 12 are adapted to abut against each other on each end ofthe twyer sections 9 so as to form the pockets 13 between such ends andthe main twyers 14 between such walls on each of said sections. Theinner faces of thesides 10 and 11 andwalls 12 on the twyer sections 9are in line with the lower side ofthe .outwardly flared faces 7 Awiththe outer faces 7 on said sections 6,

While the outer portion of the side 11 eX-' tends beyond the side 10 andwalls 11, so as to form the flange orprojecting hollow portion 11thereon, and the annular a1r cham- Patented Mar. 14, 1911.-

ber 15 betweenA the portion 11 and the i flange portion 8 on thesections 6 by thecas- A,

ing 16 fitting against-said portions.

Extending eXterio-rly around the bosh E2 of the furnace A isthe'bustleor main air pipe 17,. which is connected 1n the usual mannerto the usual supply englne, and has vthe pipes 18 leadingtherefrom".into the.

twyer chamber 'l5 at a point inline with the pockets 13 between theItwyers14. Pipes 19 also lead fromthe pipes 18. into an annularlauxiliary air chamber 20 formed in the upper' within the wall portions 3and 3 of the same, and the usual casing 23 surrounds such portions,while the usual casing 24 surrounds portion 4L of the upper wall if,which wall extends beyond said bosh in the ordinary manner as at 4, andis Supported by the columns 25.-

The water for-the jacket 6' and its fl-ange 8 enters at one end of thesections 6 through the inlet pipe 26 from any source of supply,

and passes out through the outlet pipe 27 at the other end of suchsections and from the flange 8 thereon. The water for the twyer portion9 enters centrally of the lower side 11 on the sections 9 and throughthe projecting portion 11 thereon from the inlet pipe 2,8 connected to asource of'supply and passes out from said twyer portion through theoutlet pipe 29 leading centrally from the upper side 10 on saidsections.

When it is desired to operate my improved blast furnace A to melt thematerials therein a portion of the blastbf air will pass from the mainpipe 17 through the pipes 18 into the annular air chamber 15 formed bythe ackets 6 and 9, and thence into the pockets 13 formed by the walls12, where such air will be deflected by such walls, so that it will passaround the same and then pass through the twyers 14: into the furnaceand below the projecting port-ion therein formed yby the flared faces 7on said jacket 6. At the same time a portion of the blast of air fromthe main pipe- 17 will pass from the pipes 18 -into the pipes 19, andthence into the annular air chamber 20 in the wall portion 3, so that itcan then enter the twyers 21 and be projected downward therefrom andinto the furnace below the projecting portion 5 formed by the flaredwall 5 on the wall 3 by the inclined portions 21 on said twyers. uringthis operation of the furnace Av the water is circulated in the ordinarymanner in the bosh-plates 22 in thel wall portions 3 and 3, and water isalso circulated around the sides 10 and 11 and walls 12 of the twyerjacket 9 by the pipes 28 and 29, as well as aroundthe jacket 6 andflange 8V thereon by the'V pipes 26 and 27.

It will thus be seen that by my improved blast furnace the large airchamber for the lower or main-twyers will provide. for a large twyerarea, so that a large volume of air can be placed in said chamber, whichwill equalize the-blast, and thereby form an even pressure of the blastas it passes through each and everyone of such twyers into the furnace,while the upper or auxiliary twyers will also be provided with such achamber to provide for such twyers working along the same lines and withthe same result. By the use of the upper twyers in connection with thelower twyers the furnace will be prevented from scaolding, and lwillalso enable such furnace to economize in fuel and make an increasedoutput therefrom. The construction of the bosh will also enable thewalls of the same to be com'- pletely and thoroughly protected, whichwill prevent the burning'out of said walls and the twyers within thesame.

It will also be evident that much thinner walls can be used in the boshof the furnace, which will thereby cheapen the cost of materials andmaintenance of such bosh, and will thus enable them to be easier andmore quickly repaired or renewed, when necessary.

It will further be obvious that my improved construction can be appliedto furnaces other than the ordinary blast type, while various othermodiications and changes in the design and construction of my improvedblast furnace may be resorted to, without departing from the spirit ofthe invention, or sacrificing any of its advantages.

What l claim as my invention and desire i to secure by Letters Patent.is-

1. A furnace having its lining formed with a water jacket therein, waterjacketed air twyers in said lining below said jacket and opening intothe furnace, and anl outer annular air chamber within and around saidjacket andtwyers for communicating with said twyers.

2. A furnace l having its lining formed with a water jacket' therein,water jacketed air twyers in said lining below said jacket and openinginto the furnace, and an outer annular air chamber around said jacketand twyers and formed partly by said jacket and twyers for communicatingwith said twyers.

3. A furnace having its lining .formed with a water jacket thereinhaving an outer iange portion thereon, water jacketed air twyers in saidlining below said jacket and opening into the furnace, said twyershaving an outer flange -portion thereon, and an chamber around saidjacket and `twyers and formed partly by said jacketand twyersforcommunicating with said twyers.

5. A furnace having its lining formed With an inwardly projectingportion, a Water jacket in said lining below said p0rtion having adownwardly and outwardly flared inner face and an outer flange portionthereon, Water jacketed air twyers in said lining below said jacket andopening into the furnace, said twyers having an outer flange portionthereon, and an outer'annular air chamber around said jacket and tWyersand formed by the flange portions on FRANCIS J. ZiPPL'ERl Witnesses: 'v

J. L. TREFALLER, Jr., J. N. COOKE.

